---
title: "Get action-bound passkey options"
method: POST
path: "/api/v1/challenges/{challenge_id}/passkey/options"
tags: ["canonical"]
---

# Get action-bound passkey options

`POST /api/v1/challenges/{challenge_id}/passkey/options`

## Request

- Base URL: `https://app.graypass.org` (the document declares no server; this is the origin it was published from)
- URL: `https://app.graypass.org/api/v1/challenges/{challenge_id}/passkey/options`
- Auth: HTTP bearer

Obtain WebAuthn authentication options bound to this challenge’s immutable request digest.

## Path parameters

- `challenge_id` string, required

## Response `200`

WebAuthn request options with action-bound challenge bytes, RP id, eligible credentials and required user verification.

- object

## Other responses

- `422`: The canonical handler returns a Problem for invalid input; correct the request before retrying.

---

[API](https://skmtc.dev/graypass/apis/graypass-api.md) - [All operations](https://skmtc.dev/graypass/apis/graypass-api/llms.txt) - [OpenAPI document](https://skmtc.dev/graypass/apis/graypass-api/revisions/5f9ab64fdfdb?raw)